Service manual

2121
ACTUATOR CONTROL
9
SUZ-KA25VA2.TH SUZ-KA35VA2.TH SUZ-KA50VA2.TH
SUZ-KA60VA2.TH
SUZ-KA71VA2.TH
9-3. Relation between main sensor and actuator
9-2. R.V. coil control
Heating
. . . . . . . . . . . . . . . . .
ON
Cooling . . . . . . . . . . . . . . . . . OFF
Dry
. . . . . . . . . . . . . . . . . . . .
OFF
ON
OFF
ON
OFF
Outdoor fan
Compressor
5 seconds 15 seconds
ON
OFF
Compressor
Outdoor fan
motor
R.V.coil
ON
OFF
ON
OFF
<COOL>
5 seconds
<HEAT>
5 seconds
9-1. Outdoor fan motor control
The fan motor turns ON/OFF, interlocking with the compressor.
[ON] The fan motor turns ON 5 seconds before the compressor starts up.
[OFF] The fan motor turns OFF 15 seconds after the compressor has stopped running.
esopruProsneS
Actuator
Compressor LEV
Outdoor fan
motor
R.V.coil
Discharge temperature
thermistor
Protection
Indoor coil temperature
thermistor
Cooling: Coil frost prevention
Heating: High pressure protection
Defrost thermistor Heating: Defrosting
Fin temperature thermistor Protection
Ambient temperature
thermistor
Cooling: Low ambient temperature operation
Outdoor heat exchanger tem-
perature thermistor
Cooling: Low ambient temperature operation
Cooling: High pressure protection
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NOTE: The 4-way valve reverses for 5 seconds
right before start-up of the compressor.
OCH472A